expired certificate and trouble syncing?

I went to try and access a PDF by logging into the Zotero website, and when I clicked access the PDF, I got this error:

files.zotero.net uses an invalid security certificate.

The certificate expired on Tuesday, April 18, 2017 11:06 PM. The current time is Wednesday, April 19, 2017 10:14 AM.

Error code: SEC_ERROR_EXPIRED_CERTIFICATE

I tried instead to sync, and got this error:
An error occurred during syncing:

HTTP GET https://api.zotero.org/users/1583373/publications/fulltext?format=versions failed with status code 404

Any chance these are related?
Sign In or Register to comment.